Vulnerability Description
WNC T-Mobile 5G Box IDU router is vulnerable to a command injection. The vulnerability exists in the ping functionality within the /cgi-bin/portal.cgi endpoint, specifically affecting the ping_ip, ping_size, and ping_times POST parameters. The root cause is the failure to verify and sanitize user-supplied input before incorporating it into a system command. This allows an authenticated attacker to execute arbitrary commands on the shell and gain root access to the system.This issue has been fixed in firmware version 1.1.0.651412
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-40855?
CVE-2026-40855 is a documented vulnerability. WNC T-Mobile 5G Box IDU router is vulnerable to a command injection. The vulnerability exists in the ping functionality within the /cgi-bin/portal.cgi endpoint, specifically affecting the ping_ip, pin...
How severe is CVE-2026-40855?
CVSS scoring is not yet available for CVE-2026-40855. Check NVD for updates.
Is there a patch for CVE-2026-40855?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.